SOSS Invisible Hinge Model 216, 20 Minute Fire Rated, Zinc, Bright Brass Exterior Finish, Model Number 216US3
- For use with material 1-3/8" to 1-3/4" thick.
- Riveted steel hinge pin is non-removable.
- Fully mortised into the door and frame, so hinge cannot be seen form either side of the door when the hinge is closed.
- No adjustment needed once the hinge is installed.
- Nylon hinge links provide smooth hinge operation.